If on aggressive,
you'll likely snipe a guy and a dog off to the E as soon
as you enter. Then advance up to the line of cars and
duck behind them, standing to fire at the combatants on
the ridge. Don't fire unless you have at least a 30%
chance to hit; you will just waste ammo.

There are 3 ways in
to the complex, as advised by the map. I suggest taking
the south route as you can get to your contact there. It
is highly advisable to keep the alarm from sounding if
you can help it, so engage the guards quickly and quietly
so as not to send them running to the sirens.

Move SE
towards the SE stairs. You can kill the bridge guards if
you want since they don't have guns (pretty dumb if ya
ask me), but there are sentries that walk around with
guns. The N section with the still is especially highly
guarded, with a guy with an AK47; a great weapon, but you
have to take it from him.

The south
side is pretty lightly guarded, and in a tent (on the W
side of the gorge) is a shelf with stuff and a sleeping
guy, easily ambushed. Move to the agreed meeting point
and find the guy with red armor. He is in the building,
crouched. From there, go NE to the room with the
bookshelf. Kill the guy with the spear and his buddy
nearby. Get the scouting manual on the shelf and read it
for outdoorsman skill.

Go NE
again and kill the spear guy there by the fire. Head E
into the wood- floored room and loot the cabinet. Once
there, move the squad N to NE of the porthole building
with the sleeping guards. Sneak in and then kill them
quickly. Then move SW to the room with the locked door
and 'Ripley the prisoner'. You may have to sneak, and/or
shoot the guards in the main street before they set off
the alarm. This will be tricky, and if you find it
difficult, you'll likely have to go all the way around
through the still area, killing those foes, and come from
both sides, the north and the south side of the street,
to get enough shots off to kill them before the siren
goes off.

You can
try to pick the lock, but it'll be difficult. If you do,
she'll open the door and run off. Go into the tent nearby
and rescue the elder. Ware the guys in the bunker in the
street. Shooting nearby will probably set off the guards
to attack you, and they'll start coming out of the tents.
If you're good enough, you can pick them off 1 at a time
as they come at you, but crouch and take cover just in
case. When done, loot the bodies and tents for some good
stuff. If you're lucky, you won't have awoken most of the
guards, and they will be sleeping in the tents. Just walk
your guys up to the door on passive sentry, and then
activate agressive; 6 free shots at 95%. Execution style,
as it were.

Head N
from here to the little compound with the guy locked
inside. Getting through the door is difficult. I have yet
to actually get in there, and would be most interested to
find out what was inside...

Concerning
the locked house that you were interested in getting into
on the Freeport mission, one of the guards that generally
hangs around the tent the elder's in has the key. In
fact, If I remember correctly, in addition to the key he
has better loot than any other guard in the Freeport
mission. Hope that helps.
-----------

In
Freeport just North of the (northeast) building with the
two sleeping guards which is northwest of the guard by
the fire, there is a locker with an AK-47 (your first one
to get - and not on a person) and some ammo or other
stuff. You can return their to confirm the contents. I
only bring this up since this weapon can help out
immensely on this mission and gives you at least two by
the end of this mission.
-----------

Next, head
E toward the still. Stop in the room full of boxes to
kill a guy and loot a crate. Then continue toward the
still. There will be guys sleeping here, and a guy with
an AK right near the still, so be careful and crouch on
the approach. If you have to, hide behind the crates and
move out, shoot at him, and then move back out of sight.

Once
they're all dead, go talk to the Tribal Elder and tell
him to go to the exit area, then proceed there yourself.